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89 Triple shunt is a device for conveying the high pressure grout, compressed air and high pressure water from the high pressure mud pump, air compressor and high pressure cleaning pump into the triple rotary jet drill pipe, which is installed on the top of the drill pipe. In the structure and strength can withstand a certain tension, but also can withstand the impact of the drill pipe vibration, the use of the most advanced domestic sealing device, pressure up to 30Mpa, in the process of drilling pipe rotation has good high pressure sealing. It has the characteristics of convenient maintenance, simple disassembly and long service life. A one-way valve is provided at the entrance of the airway to avoid accidental damage to the air compressor.